【Q&A】August 4, 2017
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This post was last edited by LQ198619 on 2017-8-3 23:39. What is saturated vapor pressure? Answer: In any liquid, the surface molecules have a tendency to break away from the liquid surface and move into space, a process known as vaporization. At the same time, the spatial gas molecules generated also have a tendency to form a liquid due to their continuous motion, that is, liquefaction. Vaporization and liquefaction are two opposite processes that occur simultaneously. At a certain temperature, when the number of molecules that move into space equals the number of molecules that form the liquid, that is, when the relative amounts of vapor and liquid no longer change, a dynamic equilibrium is established between the vapor and the liquid. At this point, the vapor pressure above the liquid is the saturated vapor pressure of that liquid at that temperature. http://down.hcbbs.cc/attachment/forum/201706/10/203353z7y06fdo70r6eod0.jpg Announcement on the recruitment of qualified moderators in the petrochemical sector (valid indefinitely) http://bbs.hcbbs.com/thread-1811628-1-1.html (Source: Haichuan Chemical Industry Forum) “My Technical Upgrades” in the field of coal chemical industry in 2017 http://bbs.hcbbs.com/thread-1786290-1-1.html (Source: Haichuan Chemical Industry Forum) Event for registered chemical engineers: Sharing experiences and learning from others’ experiences http://bbs.hcbbs.com/thread-1808158-1-1.html (Source: Haichuan Chemical Industry Forum)
Vapor pressure refers to the pressure exerted by the vapor of a substance present on the surface of a liquid (or solid) on that liquid’s surface; this pressure is known as the vapor pressure of the liquid. However, when the temperature is constant, the vapor pressure will eventually stabilize at a fixed value; this vapor pressure is known as the saturated vapor pressure of water at that temperature.
In any liquid, the molecules on its surface have a tendency to break away from the surface and move into space, a process known as vaporization. At the same time, the spatial gas molecules generated also have a tendency to form a liquid due to their continuous motion, that is, liquefaction. Vaporization and liquefaction are two opposite processes that occur simultaneously. At a certain temperature, when the number of molecules that move into space equals the number of molecules that form the liquid, that is, when the relative amounts of vapor and liquid no longer change, a dynamic equilibrium is established between the vapor and the liquid. At this point, the vapor pressure above the liquid is the saturated vapor pressure of that liquid at that temperature.
In any liquid, the molecules on its surface have a tendency to break away from the surface and move into space, a process known as vaporization. At the same time, the spatial gas molecules generated also have a tendency to form a liquid due to their continuous motion, that is, liquefaction. Vaporization and liquefaction are two opposite processes that occur simultaneously. At a certain temperature, when the number of molecules that move into space equals the number of molecules that form the liquid, that is, when the relative amounts of vapor and liquid no longer change, a dynamic equilibrium is established between the vapor and the liquid. At this point, the vapor pressure above the liquid is the saturated vapor pressure of that liquid at that temperature.
In a closed space, at a given temperature, the gas pressure when the liquid and gas phases of a certain substance coexist
In any liquid, the molecules on its surface have a tendency to break away from the surface and move into space, a process known as vaporization. At the same time, the spatial gas molecules generated also have a tendency to form a liquid due to their continuous motion, that is, liquefaction. Vaporization and liquefaction are two opposite processes that occur simultaneously. At a certain temperature, when the number of molecules that move into space equals the number of molecules that form the liquid, that is, when the relative amounts of vapor and liquid no longer change, a dynamic equilibrium is established between the vapor and the liquid. At this point, the vapor pressure above the liquid is the saturated vapor pressure of that liquid at that temperature.
The pressure of a vapor that is in phase equilibrium with a solid or liquid at a certain temperature under sealed conditions is called the saturated vapor pressure.
At a certain temperature, the pressure exerted by steam that is in equilibrium with the liquid (or solid) form of the same substance is called the saturated vapor pressure, and this pressure increases as the temperature rises.
At a certain temperature, the pressure exerted by the vapor in equilibrium with the liquid (or solid) form of the same substance is called the saturated vapor pressure, and it increases as the temperature rises.
The pressure of a vapor that is in phase equilibrium with a solid or liquid at a certain temperature under sealed conditions is called the saturated vapor pressure
Vapor pressure refers to the pressure exerted by the vapor of a substance present on the surface of a liquid (or solid) on that liquid’s surface; this pressure is known as the vapor pressure of the liquid.